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Plant waste based sludge fertilizer for calcareous soil and preparation method

A technology for plant waste and calcareous soil, which is applied to the field of sludge fertilizer and preparation of calcareous soil, can solve the problems of hindering plant growth and development, loss of nitrogen and phosphorus fertilizer surface diameter, and difficulty in controlling the amount of fertilization, so as to reduce the combined water combination. rate, changing dehydration properties, promoting enzymatic decomposition and biocorrosion

Inactive Publication Date: 2017-12-22
LUOYANG MAOSHENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-term fertilization time can be extended to the entire growth cycle of crops, which is time-consuming and labor-intensive; moreover, the amount of fertilization is not easy to control. If too little fertilization does not achieve the expected effect, the cost is difficult to recover, resulting in economic losses. Unscientific fertilization will not only hinder the growth and development of plants, but also cause waste of resources, environmental pollution and decline in farmland productivity. Excessive application of nitrogen and phosphorus fertilizers will cause water eutrophication

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A sludge fertilizer for calcareous soils based on plant waste, prepared by the following steps:

[0023] Step 1, take the sludge treated by the sewage treatment plant through the first stage, add its mass fraction to the sludge as 1% zinc chloride, 10% humic acid and 4% ferric chloride, stir evenly and let stand 1-2h, suction and filter the surface moisture, and then dehydrate to a moisture content of 75%-80%, to obtain pretreated sludge;

[0024] Step 2: Add protease, amylase and lipase to the pretreatment sludge, the enzyme amount is 10,000 U / g, then stir for 15 hours under the condition of 50-60rpm / min, carry out air blowing during the stirring process, at the beginning Blast at 36°C for 5.5 hours, then raise the temperature to 50°C for 140 minutes, then blow at 72°C for 1.5 hours, and finally blow at 85°C until the stirring is completed, dry until the moisture content is 40-45%, crush, and pass through 100 mesh Sieve to obtain pre-treatment sludge;

[0025] Step 3...

Embodiment 2

[0028] A sludge fertilizer for calcareous soils based on plant waste, prepared by the following steps:

[0029] Step 1, take the sludge treated by the sewage treatment plant through the primary treatment, add zinc chloride, 8% humic acid and 5% ferric chloride to the sludge, stir evenly and let it stand 1-2h, suction and filter the surface moisture, and then dehydrate to a moisture content of 75%-80%, to obtain pretreated sludge;

[0030] Step 2: Add protease, amylase and lipase to the pretreated sludge, the enzyme amount is 20,000 U / g, stir for 12 hours under the condition of 50-60rpm / min, blow air during the stirring process, start at 42 Blast at ℃ for 6 hours, then raise the temperature to 53°C and blow for 2.5 hours, then blow at 75°C for 80 minutes, and finally blow at 87°C until the stirring is completed, dry until the moisture content is 40-45%, and crush through a 100-mesh sieve to obtain pre-treatment sludge;

[0031] Step 3, crush the plant waste into 5-8mm and mix...

Embodiment 3

[0034]A sludge fertilizer for calcareous soils based on plant waste, prepared by the following steps:

[0035] Step 1, take the sludge treated by the sewage treatment plant through the primary treatment, add its mass fraction to the sludge as 2% zinc chloride, 6% humic acid and 6% ferric chloride, stir evenly and let it stand 1-2h, suction and filter the surface moisture, and then dehydrate to a moisture content of 75%-80%, to obtain pretreated sludge;

[0036] Step 2: Add protease, amylase and lipase to the pretreated sludge, the enzyme amount is 50,000 U / g, stir for 10 hours under the condition of 50-60rpm / min, blow air during the stirring process, start at 45 Blast at ℃ for 5 hours, then raise the temperature to 55°C for 2 hours, then blow at 80°C for 1 hour, and finally blow at 90°C until the stirring is completed, dry until the moisture content is 40-45%, crush through a 100-mesh sieve, and obtain treatment of sludge;

[0037] Step 3, crush the plant waste into 5-8mm an...

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Abstract

The invention relates to plant waste based sludge fertilizer for calcareous soil and a preparation method and belongs to the fields of sludge treatment and crop planting. The sludge fertilizer is prepared through the following steps: firstly, zinc chloride, humic acid and ferric chloride are added to sludge, the materials are blended, stirred and subjected to suction filtration, dehydration is performed, and pre-treated sludge is obtained; protease, amylase and lipase are added to the pre-treated sludge, then stirring, air blowing at graded temperatures, drying, crushing and sieving are performed, and preliminarily treated sludge is obtained; plant waste is ground and mixed with the preliminarily treated sludge, and a mixture is obtained; the mixture is soaked in a sodium chloride solution, drained and pyrolyzed, and after-treated sludge is obtained; the after-treated sludge is washed with a hydrochloric acid solution, dried, cooled, crushed and sieved, and the sludge fertilizer is obtained. Crops can be planted in the calcareous soil effectively and production output can be increased effectively after the sludge fertilizer is applied to the calcareous soil.

Description

technical field [0001] The invention belongs to the field of sludge treatment and crop planting, and in particular relates to sludge fertilizer for calcareous soil based on plant waste and a preparation method. Background technique [0002] Calcareous soil refers to the general term for soil containing free calcium carbonate. It is widely distributed in arid and semi-arid areas between 10°-40° north and south latitudes, accounting for about 1 / 3 of the world's land area. The distribution of calcareous soil in my country is also very large. Widely, in calcareous soil, the availability of trace elements is very low, and with the application of high-concentration chemical fertilizers, the increase of yield, and the decrease of organic fertilizer input, the deficiency of trace elements in crops is more and more common, and the advantage of trace elements The lack of elements will become the limiting factor of crop yield, and even the grains will not be harvested in severe cases. F...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/00A01C21/00C05G3/80
CPCA01C21/00C05D9/00C05G3/00C05G3/80C05D9/02C05F5/00C05F5/006C05F5/008C05F7/00C05F11/00C05F11/02
Inventor 杨元涛杨志学杨阁阁
Owner LUOYANG MAOSHENG BIOTECH
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